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|
#!/usr/bin/perl
#
# Use try to connect to an IMAP server, and
# wait for the right output.
#
# For use with "mon".
#
# Arguments are "-p port -t timeout host [host...]"
#
# Adapted from "http.monitor" by
# Jim Trocki, trockij@transmeta.com
#
# http.monitor written by
#
# Jon Meek
# American Cyanamid Company
# Princeton, NJ
#
# $Id: imap.monitor,v 1.3 2005/08/20 15:27:56 vitroth Exp $
#
# Copyright (C) 1998, Jim Trocki
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
use Getopt::Std;
use English;
getopts ("m:p:t:");
$PORT = $opt_p || 143;
$TIMEOUT = $opt_t || 30;
$MAILBOX=$opt_m || undef;
@failures = ();
foreach $host (@ARGV) {
if (! &imapGET($host, $PORT)) {
push (@failures, $host);
}
}
if (@failures == 0) {
exit 0;
}
print join (" ", sort @failures), "\n\n", join ("\n", @longerr), "\n";
exit 1;
sub imapGET {
use Socket;
use Sys::Hostname;
my($Server, $Port) = @_;
my($ServerOK, $TheContent, $cmd);
$ServerOK = 0;
$TheContent = '';
$Path = '/';
###############################################################
eval {
local $SIG{ALRM} = sub { die "Timeout Alarm" };
alarm $TIMEOUT;
$result = &OpenSocket($Server, $Port); # Open a connection to the server
if ($result == 0) { # Failure to open the socket
push @longerr, "$Server: Unable to connect";
return '';
}
$in = <S>;
if ($in !~ /^\* (OK|PREAUTH|BYE)/) {
alarm 0;
push @longerr, "$Server: No IMAP banner received";
return 0;
}
$cmd="login";
print S "A1 LOGIN ANONYMOUS ANONYMOUS\r\n";
while (defined($in=<S>)) {
if ($in =~ /^A1 (\w+) (.*)/) {
if ($1 eq "OK") {
$ServerOK = 1;
} else {
$errmsg="$1 $2";
}
last;
}
}
if ($ServerOK && $MAILBOX) {
$cmd="examine";
$ServerOK=0;
print S "A2 EXAMINE $MAILBOX\r\n";
while (defined($in=<S>)) {
if ($in =~ /^A2 (\w+) (.*)/) {
if ($1 eq "OK") {
$ServerOK = 1;
} else {
$errmsg="$1 $2";
}
last;
}
}
}
if ($ServerOK) {
$cmd="logout";
$ServerOK=0;
print S "A3 LOGOUT\r\n";
while (defined($in=<S>)) {
if ($in =~ /^A3 (\w+) (.*)/) {
if ($1 eq "OK") {
$ServerOK = 1;
} else {
$errmsg="$1 $2";
}
last;
}
}
}
if (!$ServerOK) {
if ($errmsg) {
push @longerr, "$Server: bad response to $cmd: $errmsg";
} else {
push @longerr, "$Server: No response to $cmd";
}
}
close(S);
alarm 0; # Cancel the alarm
};
if ($EVAL_ERROR and ($EVAL_ERROR =~ /^Timeout Alarm/)) {
push @longerr, "$Server: **** Time Out\n";
return 0;
} elsif ($EVAL_ERROR) {
push @longerr, "$Server: $EVAL_ERROR";
return 0;
}
return $ServerOK;
}
sub OpenSocket {
#
# Make a Berkeley socket connection between this program and a TCP port
# on another (or this) host. Port can be a number or a named service
#
local($OtherHostname, $Port) = @_;
local($OurHostname, $sockaddr, $name, $aliases, $proto, $type, $len,
$ThisAddr, $that);
$OurHostname = &hostname;
($name, $aliases, $proto) = getprotobyname('tcp');
($name, $aliases, $Port) = getservbyname($Port, 'tcp') unless $Port =~ /^\d+$/;
($name, $aliases, $type, $len, $ThisAddr) = gethostbyname($OurHostname);
($name, $aliases, $type, $len, $OtherHostAddr) = gethostbyname($OtherHostname);
my $that = sockaddr_in ($Port, $OtherHostAddr);
$result = socket(S, &PF_INET, &SOCK_STREAM, $proto) || return undef;
$result = connect(S, $that) || return undef;
select(S); $| = 1; select(STDOUT); # set S to be un-buffered
return 1; # success
}
|
